Which of the following prefixes means first?
a. mono-
b. uni-
c. primi-
d. poly-
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Which of the following is NOT a means by which substances such as oxygen, carbon dioxide, and nutrients exchange across a semipermeable membrane?
a. Diffusion b. Osmosis c. Facilitated diffusion d. Active transport
Which of the following statements regarding a dry-pipe sprinkler inspection is MOST accurate?
A. The ball drip valve must not move. B. The indicating control valves must be open. C. The velocity drip valve must not allow water to seep out. D. The air pressure must be at 10 psi (70 kPa) above the trip point.
A patient with blunt chest wall trauma has a flail section to her chest. She is conscious and confused, her breathing is rapid and shallow, and breath sounds are diminished bilaterally. After manually stabilizing the flail section of the chest wall, the EMT best treats this condition by:
A) Applying ice packs to the flail segment B) Administering supplemental oxygen through a nonrebreather face mask C) Providing positive pressure ventilation with oxygen attached D) Inserting an oropharyngeal airway and ventilating the patient on room air
The semilunar valves open when the
A) impulse arrives at the AV node. B) atrial and ventricular pressures are equal. C) atrial pressure exceeds the ventricular pressure. D) ventricular pressure exceeds the aortic and pulmonary arterial pressures.